No. In that case I would not call Demuras' kata "cool". They are very basic in the sense of teaching fundamental skills for using nunchukas. There is a pretty good balance between, flailing, blocking, and trapping techniques but they are not what I would call "visually stunning".

Personally, if it were me, I would want to be learning to use a weapon from its pragmatic side, but thats just me. If flash is what you are looking for I bet you would have a lot better luck just keeping your eye open for out-takes of some of the larger International tournaments and then scan through the weapons competitions. The whole idea of many of the "kata" there (and I use the term VERY loosely) is to be visually stunning. All the same I would start out very slowly--- unless of course the idea of having children later in life is something you have already ruled out of your plans.

Of course the signs of a modern nunchaku kata is you move a bit (including kicks) then stand still and twirl, then you move a bit more and then stand still and twirl again, and repeat as required.

Essentially correct swinging practice, work on hitting a heavy bag or a tree to understand how they will snap back at you during impact are likely all anyone really needs. Especially as they've been banned in so many places.

And of course how nunchaku can be used for jabbing, or even non-swinging stick work, and the locks with attendnat pain that a nunchaku lock can execute.

Nor do you really need two sticks. In Hapkido we have the dan bong or "short stick" with which most people are familiar. However, a gentleman by the name of Geoff Booth has shortened the stick and lengthened the lanyard. The resulting set of techniques which trap and wrap the wrist are incredibly effective as far as pain compliance goes. I mention this because up until the point that I experienced Mr. Booth's material I thought the trapping techniques of the nunchukas were about as effective as one could get. Just a thought.

Of course the correct way were no kata at all. Original study of Okinawan nunchaku did not include kata.

This is what I have been taught as well, that there were no nunchaku kata back in the day but that some were created later. My style has a couple, and they are quite boring to the eye. But they teach what they are meant to teach, which is how to actually use the weapon, not to look cool.